John, Thanks for your response. I'm a nervous wreck about this pool chemistry stuff. I wanted to make sure the bleach (borax and baking soda) won't cause a weird reaction with the chlorine bac-pacs in the Frog unit.

The bac pacs are expensive, but I got a case with my pool so I'll use the system this season and make a decision next year about doing straight B/B/B

Thelma